Renesas RA Family  MCK-RA6T2 User's Manual 
R12UZ0091EJ0100 Rev 1.00    Page 28 of 38 
August 3, 2021   
6.  CPU Board Specification 
This section describes the specification of the CPU Board. 
 
6.1  Functions 
6.1.1  Power supply 
When not connected to the inverter board, power should be supplied from the USB connector. When 
connecting to the inverter board, power supply from the USB connector or from the inverter board will be 
automatically selected. USB power supply has priority. 
 
6.1.2  Onboard debugger 
This product has the onboard debugger circuit, J-Link On-Board (hereinafter called “J-Link-OB”). You can 
write a program (firmware) of RA6T2 with it. When you write a program, connect the CPU board to PC with 
USB cable. J-Link-OB operates as debugger equivalent to J-Link. If connecting from Integrated Development 
Environment or flash programing tool (e.g. J-Flash Lite by SEGGER), set the type of debugger (tool) to “J-
Link”.